vegan-internal {vegan} | R Documentation |
Internal vegan functions that are not intended to be called directly, but only within other functions.
ordiGetData(call, env) ordiParseFormula(formula, data, xlev = NULL, envdepth = 2) ordiTerminfo(d, data) ordiArrowMul(x, at = c(0,0), fill = 0.75) ordiArgAbsorber(..., shrink, origin, scaling, triangular, display, choices, const, FUN) centroids.cca(x, mf, wt) permuted.index(n, strata) pasteCall(call, prefix = "Call:")
The description here is only intended for vegan developers: these functions are not intended for users, but they only should be used within functions
ordiGetData
finds the model frame of constraints and conditions
in constrained ordination in the defined env
ironment.
ordiParseFormula
returns a list of three matrices (dependent
variables, and model.matrix
of constraints and
conditions, possibly NULL
) needed in constrained
ordination. Argument xlev
is passed to
model.frame
and argument envdepth
specifies the
depth at which the community data (dependent data) is evaluated;
default envdepth = 2
evaluates that in the environment of the
parent of the calling function, and envdepth = 1
within the
calling function (see eval.parent
). ordiTermInfo
finds the term information for constrained ordination as described in
cca.object
.
ordiArgAbsorber
absorbs arguments of scores
function of vegan so that these do not cause superfluous
warnings in graphical function FUN
. If you implement
scores
functions with new arguments, you should update
ordiArgAbsorber
.
centroids.cca
finds the weighted centroids of variables.
permuted.index
creates permuted index of length n
possibly stratified within strata
. This is the basic vegan
permutation function that should be replaced with more powerful
permuted.index2
in the future releases of vegan, and all
new functions should use permuted.index2
.
pasteCall
prints the function call so that it is nicely wrapped
in Sweave
output.